A number of complaints have been
received concerning temperature gauges reading high ( in red zone ).
Vectra and Omega B with X20XEV
There are a small number of
engines manufactured with a defective temperature sensor supplied by Zertan in
Defective sensors can be
identified by the manufacturers logo and production date stamp between 98/12
and 99/07 which are stamped on the hexagonal flats of the unit as shown
Please carry out a cross check
with Tech 2 and verify the engine temperature by using the coolant temperature
sensor for the Fuel Injection system. If the coolant sensor shows a different
temperature reading than the temperature gauge, the temperature gauge sensor is
Temperature Sensor 03
Sensors from supplier VDO are not
The warehouse stock has been
cleared and all delivered parts are OK.
At the moment we are only aware of
problems reported on Vectra and Omega with X20XEV engines produced in
Kaiserslautern ( X20XEV 14......). Astra G and Zafira are not affected by this
If any other engines are found to
have the same concern, please feed back this information to us.
Please check your stock and ensue
that Zertan sensors in the affected range are not used for remedial action.